* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #303948;
    color: #FFFFFF;
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 2px solid #3cbef2;
}

.logo img {
    filter: brightness(0) invert(1);
}

.security-badge img {
    border-radius: 8px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin-top: 15px;
    flex-wrap: wrap;
}

.main-nav li {
    margin-right: 30px;
}

.main-nav a {
    color: #FFFFFF;
    text-decoration: none;
    padding: 10px 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s;
    font-weight: 500;
}

.main-nav a:hover {
    border-bottom-color: #3cbef2;
}

.hero {
    text-align: center;
    padding: 80px 0;
    background: linear-gradient(135deg, #303948 0%, #3a4556 100%);
    margin: 30px 0;
    border-radius: 10px;
}

.hero h1 {
    font-size: 3.2rem;
    margin-bottom: 15px;
    color: #3cbef2;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 50px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.8rem;
    font-weight: bold;
    color: #3cbef2;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
    font-weight: 500;
}

.intro {
    padding: 60px 0;
    border-bottom: 1px solid #3a4556;
}

.intro h2 {
    color: #3cbef2;
    margin-bottom: 30px;
    font-size: 2.2rem;
}

.intro p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    line-height: 1.8;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}

.content-block h3 {
    color: #3cbef2;
    margin-bottom: 15px;
    font-size: 1.4rem;
}

.content-block p {
    line-height: 1.7;
}

.mirrors {
    background-color: #2a3342;
    padding: 60px 40px;
    border-radius: 10px;
    margin: 60px 0;
}

.mirrors h2 {
    color: #3cbef2;
    margin-bottom: 20px;
    text-align: center;
    font-size: 2.2rem;
}

.mirrors > p {
    text-align: center;
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.mirror-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.mirror-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #303948;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3cbef2;
    flex-wrap: wrap;
}

.link-number {
    font-weight: bold;
    color: #3cbef2;
    min-width: 100px;
}

.link-text {
    font-family: monospace;
    word-break: break-all;
    color: #3cbef2;
    flex-grow: 1;
    margin: 0 20px;
    font-size: 1.1rem;
}

.copy-btn {
    background-color: #3cbef2;
    color: #303948;
    border: none;
    padding: 12px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s;
    min-width: 120px;
}

.copy-btn:hover {
    background-color: #2aa8d6;
}

.verification-info {
    background-color: #303948;
    padding: 30px;
    border-radius: 8px;
    margin-top: 40px;
}

.verification-info h3 {
    color: #3cbef2;
    margin-bottom: 15px;
}

.preview-section {
    margin: 80px 0;
}

.preview-section h2 {
    text-align: center;
    color: #3cbef2;
    margin-bottom: 20px;
    font-size: 2.2rem;
}

.preview-section > p {
    text-align: center;
    margin-bottom: 50px;
    font-size: 1.1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.preview-item {
    background-color: #2a3342;
    padding: 25px;
    border-radius: 8px;
    transition: transform 0.3s;
    text-align: center;
}

.preview-item:hover {
    transform: translateY(-5px);
}

.preview-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 15px;
}

.preview-item h4 {
    color: #3cbef2;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.features {
    margin: 80px 0;
}

.features h2 {
    text-align: center;
    color: #3cbef2;
    margin-bottom: 50px;
    font-size: 2.2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature {
    background-color: #2a3342;
    padding: 35px;
    border-radius: 8px;
}

.feature h3 {
    color: #3cbef2;
    margin-bottom: 20px;
    font-size: 1.4rem;
}

.feature p {
    margin-bottom: 20px;
    line-height: 1.7;
}

.feature ul {
    list-style: none;
    padding-left: 0;
}

.feature li {
    padding: 5px 0;
    padding-left: 25px;
    position: relative;
}

.feature li:before {
    content: "✓";
    color: #3cbef2;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.user-guide {
    margin: 80px 0;
    padding: 60px 0;
    border-top: 1px solid #3a4556;
    border-bottom: 1px solid #3a4556;
}

.user-guide h2 {
    color: #3cbef2;
    margin-bottom: 40px;
    font-size: 2.2rem;
    text-align: center;
}

.guide-content {
    display: grid;
    gap: 40px;
}

.guide-section h3 {
    color: #3cbef2;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.guide-section p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.security {
    margin: 80px 0;
}

.security h2 {
    color: #3cbef2;
    margin-bottom: 40px;
    font-size: 2.2rem;
    text-align: center;
}

.security-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.security-item {
    background-color: #2a3342;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}

.security-item h3 {
    color: #3cbef2;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.faq {
    margin: 80px 0;
}

.faq h2 {
    color: #3cbef2;
    margin-bottom: 40px;
    font-size: 2.2rem;
    text-align: center;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.faq-item {
    background-color: #2a3342;
    padding: 25px;
    border-radius: 8px;
}

.faq-item h3 {
    color: #3cbef2;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

footer {
    background-color: #2a3342;
    padding: 60px 0 20px;
    margin-top: 80px;
    border-top: 2px solid #3cbef2;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: #3cbef2;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.footer-section p {
    line-height: 1.7;
    margin-bottom: 15px;
}

.payment-methods {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.payment-methods span {
    background-color: #3cbef2;
    color: #303948;
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: bold;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #3a4556;
    opacity: 0.8;
}

@media (max-width: 768px) {
    .header-top {
        flex-direction: column;
        gap: 20px;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 10px;
    }
    
    .stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .mirror-link {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .link-text {
        margin: 10px 0;
    }
    
    .features-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
}